Erik Reiner / Maker

Fabrication, costumes, CAD, and games.

I’m Erik, a maker in California. I build costumes and props, work with leather and steel, and model parts in Fusion 360.

Explore the projects Citadel Supply Co.
My finished Half-Life 2 Metrocop helmet and armor.
Half-Life 2: Metrocop — costume, props, and electronics

Selected work

Selected projects.

All eight projects →
Close portrait of the Half-Life 2 Metrocop costume showing the helmet and chest armor.
3D Printing Fusion 360 Always Evolving

Half-Life 2: Metrocop

A Half-Life 2 costume with a foam-and-fabric vest, printed helmet, belt equipment, and voice electronics.

View project ->
Handmade brown leather satchel on a tabletop.
Leatherworking Fusion 360 Complete

Leatherwork: Gifts and Studies

A satchel and eyeglass holder made as gifts, with patterns and tooling stencils developed in Fusion 360.

View project ->
Blue and white Milanese armor outdoors holding a sword.
Metalworking Leatherworking Complete

15th C. Milanese Armor

Armor built from Craig Nadler’s patterns, starting with steel salvaged from a filing cabinet.

View project ->

About

About me.

My projects range from Half-Life props to historical armor and a game prototype. I use 3D printing, sewing, metalworking, leatherworking, and electronics as each build needs them.

Get in touch →

Citadel Supply Co.

Citadel Supply Co.

I make Metrocop props and accessories through Citadel Supply Co. The stunstick and light-up belt box are available through Etsy.

Explore CitadelShop on Etsy ↗

Workshop notes / December 24, 2025

Leather patterns, CAD, and printed stencils.

Using Fusion 360 to make leather patterns and printed lettering stencils.

Read the note →